KisakCOD is an open-source, fully-buildable reimplementation of Call of Duty 4's Multiplayer. Aimed at mod developers and enthusiasts, the project aims to provide a functional multiplayer experience for the ~20-year-old game.

To build KisakCOD, users need Windows OS, Visual Studio 2022, CMake, DirectX SDK 2010, and a Steam copy of Call of Duty 4. The process involves cloning the repository, running a batch script to generate project files, and then copying necessary game files and dependencies into the build directory. The project acknowledges potential exploits in the older game and advises users to play online within a sandbox environment for added security.

The developers are actively addressing known issues and encourage community involvement. They have also started utilizing AI to assist in debugging, finding it to be a valuable tool. The project credits the original Call of Duty 4 developers and references other open-source projects for inspiration and code, including those related to Jedi Academy and BO3 Enhanced.